Behringer Poly D

• 37 velocity-sensitive keys
• aftertouch
• Monophonic, duophonic or paraphonic
• 4 oscillators
• 6 waveforms per oscillator
• Noise generator (white, pink)
• 24 dB lowpass/highpass filter (transistor cascade)
• Audio input
• 2 ADSR envelopes
• LFO with square and triangle
• Analog distortion
• Analog, three-stage chorus
• Arpeggiator
• Polyphonic step sequencer with 32 steps
• 64 patterns
• MIDI In/Out/Thru
• USB PORT
• Angled control panel

Pure power

The oscillators of a Minimoog have always been considered particularly assertive; Behringer has added a fourth, equally powerful tone generator to the Poly D's tried-and-tested trio. Thanks to this extension, the oscillators can be played in pairs in Duo mode and paraphonically in "Poly" mode. If only one sequencer track is used in "Poly" mode, so-called wave sequencing is generated by setting different oscillator waveforms. This powerful sound is complemented by the noise generator, which produces white and pink noise, and the external audio input. The level of the six signals can be adjusted in the mixer and are then fed into the charismatic filter. This is a classic transistor cascade with a 24 dB slope and can be switched to Lowpass or Highpass, which further expands the possible sound palette. With the help of the modulation mixer, FM is also possible for oscillators 1-3 and the filter through oscillator 4.

Modulation & controller

In addition to the glide controller, which is superordinate to all tone generators, the Behringer Poly D has the familiar modulation mixer, which even includes an LFO with square and triangle waveforms. Modulations and the Tracking can also be switched on in the oscillator and filter sections. The two A/D/S envelopes are permanently assigned to the filter and VCA and have a jointly switchable decay phase. In addition to CV and Gate, the keyboard is also able to output Aftertouch and Velocity as control voltages. The latter two each have their own attenuator, so that any desired destinations can be controlled in fine doses. Jack inputs on the rear panel provide additional control options for mod source, oscillator, filter and loudness (VCA). It is a good idea to connect the Aftertouch and/or Velocity outputs to these inputs using a cable.

Effects

Behringer has given the Poly D two classic analog effects: The distortion is widely adjustable and ranges from warming up to hefty overdrive and really gets going when the resonance in the filter is turned up. Pro tip: use a jack cable (6.3 mm mono on both sides) to connect one of the two main outputs or headphone output to the external audio input and enjoy the powerful feedback sounds as the resonance increases! The second effect is an analog chorus, which has two basic settings that can also be used together. This allows you to create wafting retro sounds at the touch of a button!

Sequencer

The internal, polyphonic sequencer offers space for 64 patterns, each of which can be up to 32 steps long; accents can also be programmed. Alternatively to the sequencer, a Arpeggiator with the usual playback modes is available. The notes generated by the keyboard, the internal sequencer and the Arpeggiator are communicated with the outside world via USB, MIDI and CV/Gate.